DTC C1662-00: Auto Learning failure: General Description

The Tire Pressure Monitoring System (TPMS) is the acronym for Tire Pressure Monitoring System. This system monitors the pressure of the tire and when it drops below a certain pressure, the IBU-TPMS makes the warning lamp turn on for notifying the driver. This system consists of IBU-TPMS and TPMS sensors. Among components of TPMS system, the TPMS sensor is installed at each wheel rim. and its role is to measure the air pressure and the temperature of the tire and then it transmits its signals to IBU-TPMS. The communication from TPMS sensors is done via Radio Frequency (RF) at a frequency.

The Auto Learning (AL) procedure is enabled when the vehicle has been parked for more than 19minutes and when vehicle travels again at a speed that ensures the TPMS sensors are transmitting an RF signal to IBU-TPMS. The AL procedure automatically considers all TPMS sensor all transmitted signals sent and received, based on statistical evaluation, IDs belonging to the TPMS sensors mounted on the vehicle. If new IDs are detected their recurrence will be tracked by the AL. When AL is in progress, tire pressure monitoring is running in parallel with the old set of identifiers known from the last run of AL process.